Differential Identification
AMC / Jeep (early)
Model 20
Ring Gear Diameter: 8.875”
Pinion Diameter / Spline: 1.625” / 28
Ring Gear Bolts: (8) 7/16”x20
Cover Bolts: 12
Carrier Breaks: 2.76 / 3.07
Model 35
Ring Gear Diameter: 7.562”
Pinion Diameter / Spline: 1.406“ / 26
Ring Gear Bolts: (8) 7/16”x20 RH
Cover Bolts: 10
Chrysler / Dodge / Jeep (late) / Plymouth / Ram
Chrysler 7.25"
Ring Gear Diameter: 7.25"
Pinion Diameter / Spline: 1.375" / 27
Ring Gear Bolts: (10) 3/8"x24 LH
Cover Bolts: 9 or 10
Carrier Breaks: 2.47 / 2.76
Chrysler 8.0" -Front -'00+ Dakota, Durango; 02+ 1500
Ring Gear Diameter: 8.0"
Pinion Diameter / Spline: 1.406" / 26
Ring Gear Bolts: (10) 3/8"x24 LH
Cover Bolts: 10
Carrier Breaks: None
Chrysler / Jeep 8.25" & 8.375"
Ring Gear Diameter: 8.25"
Pinion Diameter / Spline: 1.626" / 27
Ring Gear Bolts: (10) 3/8"x24 ('04 and Earlier )
Ring Gear Bolts: (10) 10mmx1.0 ('05 and Later )
Cover Bolts: (10) '04 & Earlier; (12) '05 & Later
Carrier Breaks: 2.45 / 2.56
Chrysler 8.75" - Early 742 Case
Ring Gear Diameter: 8.75"
Pinion Diameter / Spline: 1.750" / 10
Ring Gear Bolts: (12) 3/8"x24 LH
Cover Bolts: Dropout
Carrier Breaks: None
Chrysler 8.75" - Early 741 Case
Ring Gear Diameter: 8.75"
Pinion Diameter / Spline: 1.375" / 29
Ring Gear Bolts: (12) 3/8"x24 LH
Cover Bolts: Dropout
Carrier Breaks: None
Chrysler 8.75" - Late 489 Case
Ring Gear Diameter: 8.75"
Pinion Diameter / Spline: 1.875" / 29
Ring Gear Bolts: (12) 3/8"x24 LH
Cover Bolts: Dropout
Carrier Breaks: None
Chrysler 9.25" - Rear
Ring Gear Diameter: 9.25"
Pinion Diameter / Spline: 1.875" / 29
Ring Gear Bolts: (12) 7/16"x18 ('10 and Earlier )
Ring Gear Bolts: (12) 14mmx1.0 ('11 and Later )
Cover Bolts: 12
Carrier Breaks: None
Chrysler 10.5" (AAM) - 2003 & newer RAM 2500 - 3500
Ring Gear Diameter: 10.5"
Pinion Diameter / Spline: 1.750" / 30
Ring Gear Bolts: (12) 14mmx1.5 LH
Cover Bolts: 14
Carrier Breaks: None
Chrysler 9.25” (AAM) - Front - 2003 & up 3/4 and 1-Ton
Ring Gear Diameter: 9.25”
Pinion Diameter / Spline: 1.875” / 30
Ring Gear Bolts: (12) 12mm x 1.5 RH
Cover Bolts: 14
Carrier Breaks: None
Chrysler 11.5" (AAM) - 2003 & newer RAM 3500
Ring Gear Diameter: 11.5"
Pinion Diameter / Spline: 2.0" / 30
Ring Gear Bolts: (12) 14mmx1.5 LH
Cover Bolts: 14
Carrier Breaks: None
Dana
Dana 30 - Standard, Reverse Rotation, CS & TJ
Dana 30 - JK
Ring Gear Diameter: 7.20" / 181mm
Pinion Diameter / Spline: 1.375" / 26
Ring Gear Bolts: (10) 3/8"x24 RH
Cover Bolts: 10
Carrier Breaks: 3.54 / 3.73
Dana Super 30
Ring Gear Diameter: 7.33" / 186mm
Pinion Diameter / Spline: 1.625" / 24
Ring Gear Bolts: (10) 7/16" or 1/2"x20
Cover Bolts: 10
Carrier Breaks: 3.54 / 3.73
Dana 35
Ring Gear Diameter: 7.33" / 186mm
Pinion Diameter / Spline: 1.375" / 26
Ring Gear Bolts: (10) 3/8"x24 RH
Cover Bolts: 10
Carrier Breaks: 3.54 / 3.73
Dana 44 - Standard & Reverse Rotation
Ring Gear Diameter: 7.562"
Pinion Diameter / Spline: 1.376" / 26
Ring Gear Bolts: (8) 7/16"x20 RH
Cover Bolts: 10
Carrier Breaks: 2.35 /2.73 / 3.54
Dana 44HD - Corvette, Viper, Grand Cherokee
Ring Gear Diameter: 8.5" / 216mm
Pinion Diameter / Spline: 1.375" / 26
Ring Gear Bolts: (10) 3/8"x24 or 7/16"x20 RH
Cover Bolts: 10
Carrier Breaks: 3.73 / 3.92
Dana 44 - JK Rubicon Front
Ring Gear Diameter: 8.5" / 216mm
Pinion Diameter / Spline: 1.625" / 29
Ring Gear Bolts: (10) 3/8"x24 or 7/16"x20 RH
Cover Bolts: 10
Carrier Breaks: None
Dana 44 - JK Rear
Ring Gear Diameter: 8.5" / 216mm
Pinion Diameter / Spline: 1.625" / 24
Ring Gear Bolts: (10) 7/16" or 1/2"x20 RH
Cover Bolts: 10
Carrier Breaks: 3.73 / 3.92
Dana 50 - Ford Front
Ring Gear Diameter: 8.89" / 226mm
Pinion Diameter / Spline: 1.625" / 24
Ring Gear Bolts: (10) 7/16"x20 or 1/2"x20 RH
Cover Bolts: 10
Carrier Breaks: None
Dana 60 - Standard or Reverse Rotation
Ring Gear Diameter: 9" / 229mm
Pinion Diameter / Spline: 1.375" / 26
Ring Gear Bolts: (10) 7/16"x20 RH
Cover Bolts: 10
Carrier Breaks: None
Dana 70
Ring Gear Diameter: 9.75" / 248mm
Pinion Diameter / Spline: 1.625" / 29
Ring Gear Bolts: (12) 1/2"x18 RH
Cover Bolts: 10
Carrier Breaks: 4.10 / 4.56
Dana 80
Ring Gear Diameter: 10.5"
Pinion Diameter / Spline: 1.750" / 29
Ring Gear Bolts: (12) 1/2"x18 RH
Cover Bolts: 10
Carrier Breaks: 4.10 / 4.56
Ring Gear Diameter: 11.25"
Pinion Diameter / Spline: 2.0" / 37
Ring Gear Bolts: (12) 9/16"x18 RH
Cover Bolts: 10
Carrier Breaks: 3.73 / 4.10
Ford
Ford 7.5"
Ring Gear Diameter: 7.5"
Pinion Diameter / Spline: 1.625" / 28
Ring Gear Bolts: (10) 7/16"x20 RH
Cover Bolts: 10
Carrier Breaks: None
Ford 8"
Ring Gear Diameter: 8.0"
Pinion Diameter / Spline: 1.188" / 25
Ring Gear Bolts: (10) 7/16"x20 RH
Cover Bolts: Dropout
Carrier Breaks: None
Ford 8.8"
Ring Gear Diameter: 8.8"
Pinion Diameter / Spline: 1.625" / 28
Ring Gear Bolts: (10) 7/16"x20 RH
Cover Bolts: 10
Carrier Breaks: None
Ford 9.75"
Ring Gear Diameter: 9.75"
Pinion Diameter / Spline: 1.970" / 31
Ring Gear Bolts: (12) 12mm x 1.25 RH
Cover Bolts: 12
Carrier Breaks: None
Ford 9"
Ring Gear Diameter: 9.0"
Pinion Diameter / Spline: 1.312" / 28; 1.5" / 35
Ring Gear Bolts: (10) 7/16"x20 LH
Cover Bolts: Dropout
Carrier Breaks: None
Ford 10.25" / 10.5"
Ring Gear Diameter: 10.25" / 10.5"
Pinion Diameter / Spline: 1.940" / 31 (37 - 2011 & newer)
Ring Gear Bolts: (12) 1/2"x20 RH
Cover Bolts: 12
Carrier Breaks: None
GM
GM 7.2" IFS
Ring Gear Diameter: 7.2"
Pinion Diameter / Spline: 1.315" / 27
Ring Gear Bolts: (10) 10mm x 1.25
Cover Bolts: N/A
Carrier Breaks: 3.08 / 3.23
GM 7.6" IFS - Front - Late Model Midsize Truck
Ring Gear Diameter: 7.625"
Pinion Diameter / Spline: 1.438" / 28
Ring Gear Bolts: (10) 7/16"x20 RH
Cover Bolts: 10
Carrier Breaks: 3.08 / 3.23
GM 7.75" (Australian - Some 3rd Gen Camaro/Firebirds)
Ring Gear Diameter: 7.75"
Pinion Diameter / Spline: 27
Ring Gear Bolts: (8)
Cover Bolts: 9
Carrier Breaks: 2.77 / 3.27
GM 8.2" - 1955-64 Car
Ring Gear Diameter: 8.20"
Pinion Diameter / Spline: 1.438" / 17
Ring Gear Bolts: (10) 7/16"x20 RH
Cover Bolts: Dropout
Carrier Breaks: 3.70 / 4.11
GM 8.2" - 1964-72 Chevy (C-Clip Axles)
Ring Gear Diameter: 8.20"
Pinion Diameter / Spline: 1.438" / 25
Ring Gear Bolts: (10) 3/8"x24 LH
Cover Bolts: 10
Carrier Breaks: 2.76 / 3.07
GM 7.5" & 7.625"
Ring Gear Diameter: 7.5"
Pinion Diameter / Spline: 1.438" / 27
Ring Gear Bolts: (10) 7/16"x20 LH
Cover Bolts: 10
Carrier Breaks: 3.08 / 3.23
GM 7.6" IRS (Late Camaro V6)
Ring Gear Diameter: 7.6" / 193mm
Pinion Diameter / Spline: 1.438" / 27
Ring Gear Bolts: (10) 7/16"x20 RH
Cover Bolts: 10
Carrier Breaks: None
GM 8.0" - Rear - Late Model Midsize Truck
Ring Gear Diameter: 8.0"
Pinion Diameter / Spline: 1.781" / 27
Ring Gear Bolts: (10) 7/16"x20 LH
Cover Bolts: 10
Carrier Breaks: None
GM 8.2" - 1955-62 Truck
Ring Gear Diameter: 9.375"
Pinion Diameter / Spline: 1.438" / 17
Ring Gear Bolts: (12) 3/8"x24 RH
Cover Bolts: 12
Carrier Breaks: None
GM 8.2"BOP - 1964-72 (Bolt-in Axles)
Ring Gear Diameter: 8.20"
Pinion Diameter / Spline: 1.438" / 27
Ring Gear Bolts: (10) 3/8"x24 LH
Cover Bolts: 10
Carrier Breaks: 3.23 / 3.36
GM 8.25" IFS - Late Model Full Size Truck
Ring Gear Diameter: 8.25"
Pinion Diameter / Spline: 1.625" / 30
Ring Gear Bolts: (10) 7/16"x20 LH
Cover Bolts: N/A
Carrier Breaks: 3.23 / 3.42
GM 8.5" -1968-70 Oldsmobile 12-Bolt Cover/10-Bolt Gear
Ring Gear Diameter: 8.5"
Pinion Diameter / Spline: 1.626" / 27
Ring Gear Bolts: (10) 7/16"x20 RH
Cover Bolts: 12
Carrier Breaks:
GM 8.6" IRS (218mm, AAM) - Late Model Camaro V8
Ring Gear Diameter: 8.6" / 218mm
Pinion Diameter / Spline: 1.875" / 32
Ring Gear Bolts: (10) 7/16"x20 LH
Cover Bolts: 10
Carrier Breaks: None
GM 8.875" - Truck 12-Bolt
Ring Gear Diameter: 8.875"
Pinion Diameter / Spline: 1.438" / 30
Ring Gear Bolts: (12) 3/8"x24 RH
Cover Bolts: 12
Carrier Breaks: 2.76 / 2.76 - 3.42 / 3.73
GM 9.25" IFS (2011 and Newer)
Ring Gear Diameter: 9.25"
Pinion Diameter / Spline: 1.875" / 30
Ring Gear Bolts: (12) 12mm x 1.5 LH
Cover Bolts: 12
Carrier Breaks: None
GM 10.5" - Truck 14-Bolt
Ring Gear Diameter: 10.5"
Pinion Diameter / Spline: 1.875" / 30
Ring Gear Bolts: (12) 12mm x 1.5 LH
Cover Bolts: 14
Carrier Breaks: None
GM 8.5" -1970-Present Car, 1977-99 Truck (C-Clip Axles)
Ring Gear Diameter: 8.5"
Pinion Diameter / Spline: 1.625" / 30
Ring Gear Bolts: (10) 7/16"x20 LH
Cover Bolts: 10
Carrier Breaks: 2.56 / 2.73
GM 8.6" - 2000 & Newer 1/2 Ton Truck
Ring Gear Diameter: 8.6"
Pinion Diameter / Spline: 1.625" / 30
Ring Gear Bolts: (10) 7/16"x20 LH
Cover Bolts: 10
Carrier Breaks: 2.56 / 2.73
GM 8.875" - Car 12-Bolt
Ring Gear Diameter: 8.875"
Pinion Diameter / Spline: 1.625" / 30
Ring Gear Bolts: (12) 3/8"x24 RH
Cover Bolts: 12
Carrier Breaks: 2.76 / 3.08 - 3.90 / 4.10
GM 9.25" IFS (2010 and Older)
Ring Gear Diameter: 9.25"
Pinion Diameter / Spline: 1.875" / 30
Ring Gear Bolts: (12) 12mm x 1.5 LH
Cover Bolts: N/A
Carrier Breaks: None
GM 9.5" - Truck 14-Bolt
Ring Gear Diameter: 9.5"
Pinion Diameter / Spline: 1.875" / 30
Ring Gear Bolts: (12) 12mm x 1.5 LH
Cover Bolts: 14
Carrier Breaks: None
GM 11.5" - Truck 14-Bolt
Ring Gear Diameter: 11.5"
Pinion Diameter / Spline: 2.0" / 30
Ring Gear Bolts: (12) 9/16"x18 RH
Cover Bolts: 14
Carrier Breaks: 4.10 / 4.63